ul,
li {
  list-style: none;
  padding: 0;
  margin: 0;
}
li {
  cursor: pointer;
  flex: 1;
  text-align: center;
}
li div {
  padding: 5px;
}
li div.active {
  color: red;
  border-bottom: 3px solid red;
}
.content {
  padding: 10px;
  font-size: 20px;
  font-weight: 500;
}
